In addition to what others have posted above you're falling backward off the majority of your forehands - even short ones you should be on-top of. See these two pics - which are typical of most in the video.

On your backhand slice you step or veer away from all of them. Again - most of these you should be positioned better and, ideally, leaning into.

Additionally - re: the way you hit - all those shots of your partners which go out >> hit them. If they're in the air >> hit them. You're wasting all those opportunities to practice launching the racquet head/hitting on the rise etc.

I know what you mean! I watched the video and tried to stay forward the next time I played. I think it's better, but I'm going to still work on it.

For the backhand slice, I agree about the positioning. I usually step to the side because I find it gives me more sidespin, but it does lose power sometimes.

Thanks for posting the vid. I enjoyed it, but would like it a lot more if you put the camera a little lower (but still centered behind you) to capture the whole court, so we can see ball trajectory and how effective your shots are.

I can't offer any critiques or technical recommendations, just a few observations. On the whole, your strokes/shots look good to me (fluid and you make good contact ... around 4.0 level? ... just guessing), but not as consistent as they might be. Your serve looks fluid, but it looks like you're foot faulting a lot. Some good approaches and volleys, imo.

I think you have a fairly nice game now with the potential to make it a lot better.

Post more vids.

Thanks for the comments! I'm going to change the angle the next time I film, as I got a few complaints about the angle. I'm not sure if I'm a 4.0, or better or worse, as I'm Canadian and we don't have the NTRP system here.

...For the backhand slice, I agree about the positioning. I usually step to the side because I find it gives me more sidespin, but it does lose power sometimes.

I think stepping away doesn't add anything much to the stroke... It looks like you slightly miss-judge where the ball is coming and then end up crowded and therefore also a little front on as you start the stroke.

See this very good video of Federer just hitting slice backhands. There are some good tips to be seen there - especially how he has his weight on his front foot basically every time when he makes contact. Also that he gives himself room. Since he judges the distance to his body so well he gets that cross-cut action on it. He's assertive/forceful on his whereas you're almost backing away from them which will undoubtedly make them more floaty and have bite less when they bounce.

It's interesting but slice backhands are so poor on average compared to forehands and topspin backhands. Perhaps it's because so few people recognise the huge value of having a great slice compared to the floaty slices the majority of players have.

I think stepping away doesn't add anything much to the stroke... It looks like you slightly miss-judge where the ball is coming and then end up crowded and therefore also a little front on as you start the stroke.

See this very good video of Federer just hitting slice backhands. There are some good tips to be seen there - especially how he has his weight on his front foot basically every time when he makes contact. Also that he gives himself room. Since he judges the distance to his body so well he gets that cross-cut action on it. He's assertive/forceful on his whereas you're almost backing away from them which will undoubtedly make them more floaty and have bite less when they bounce.

It's interesting but slice backhands are so poor on average compared to forehands and topspin backhands. Perhaps it's because so few people recognise the huge value of having a great slice compared to the floaty slices the majority of players have.